This document discusses how C# can be used in a functional programming style by leveraging features like Action<> and Func<> for representing functions, closures, and LINQ for querying data in a functional way. It provides examples of using functional techniques in C# for tasks like finding all trees in a forest and implementing an interview coding challenge. The document concludes by mentioning additional functional concepts like partial function application, currying, and asynchronous and parallel programming.

1. Functional
Programming
in C#
with Serhiy Kalinets

2. Programming paradigms
Procedural
Object Oriented
Functional

3. C# is … functional?

4. Action<> and
Func<>

5. Closures

6. LINQ

7. LINQ: lazy

8. LINQ: deferred

9. Example 1: interview
task
http://bit.ly/PHKnLJ

10. Example 2: finding all
trees
from Eric Lippert: http://bit.ly/PHKabp

11. Async & parallel

12. Some hardcore
Partial function application
Curriyng
from Jon Skeet http://bit.ly/PHKJBM

13. Thanks!
 http://twitter.com/skalinets
 http://tdd4.net
 kalinets@gmail.com